Memory Cache: This is the objects that are stored in the memory (RAM), which provides the fastest access time. There are mainly four types of cache that Firefox implements: But it is hardly noticeable if you have a fast internet connection. If you perceive that a webpage is not rendering correctly or that some or all of the functions on the page is non-responsive or that the content on the page is out-dated, then the first course of action is to clear the cache and re-fetch to freshen up the content directly from the server.Ĭlearing all your web cache will initially slow down the loading of websites as everything including images and scripts will need to be downloaded over the network. But sometimes the cache does go stale or be corrupted, especially if the server is getting updated too quickly or if the web page headers are wrong. They remove stale and outdated objects and keep them fresh by re-fetching pro-actively or on-demand, from the server depending on many different heuristics and rules. Most browsers do such a good job with the web cache, by keeping them fresh and up to date that you hardly ever notice that it is actually working. Multiple users requesting and downloading the exact same files repeatedly increases the server load unnecessarily.īandwidth reduction: This reduces your own bandwidth usage as well as reduces the network lag incurred while downloading large assets. Reducing Server load: This reduces the load on web servers considerably allowing them to process requests faster. Having it available locally and reusing them makes the web pages to load faster. Fetching the same files multiple times every time a page is loaded is a drain on the resources. Most of these items do not change often, if at all. There are several advantages to web caching while web browsing:įaster page loads: Web pages contain several parts which might be the same across several pages of a website, such as the logo, scripts and some images among others. Web caching is a mechanism used mostly in browsers where it temporarily stores images, scripts, content and other parts of the webpage locally during the process of web browsing.
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